Self-Diagnosis Function; Indoor Unit Error - LG UTN48R Owners & Installation Manual

SELF-DIAGNOSIS FUNCTION

36
SELF-DIAGNOSIS FUNCTION

Indoor Unit Error

Code
1 Air temperature sensor of Indoor unit
Inlet pipe temperature Sensor of indoor
2
unit
Communication error : wired remote
3
controller ↔ indoor unit
4 Drain pump
Communication error : outdoor unit ↔
5
indoor unit
Outlet pipe temperature sensor of
6
indoor unit
9 Indoor EEPROM Error
10 Abnormal fan motor operation
Title
Air temperature sensor of indoor unit is open or
short
Inlet pipe temperature sensor of indoor unit is open
or short
Failing to receive wired remote controller signal in
indoor unit PCB
Malfunction of drain pump
Failing to receive outdoor unit signal in indoor unit
PCB
Outlet pipe temperature sensor of indoor unit is
open or short
In case when the serial number marked on
EEPROM of Indoor unit is 0 or FFFF
Disconnecting the fan motor connector / Failure of
indoor fan motor lock
Cause of Error